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or jkoropsak@bnl.gov .

The
Original Brookhaven Neutrino Experiment
This 1963 photo shows the first detector located in a limestone mine in
Barberton, Ohio, 2,300 feet below ground surface. This experiment
established the techniques used in the much larger Homestake mine
detector.

Construction
of the Homestake Mine tank
This 1966 photo shows the construction of the tank used in the solar
neutrino experiment in the Homestake gold mine. The tank, 20 feet in
diameter and 48 feet long, held 100,000 gallons of perchloroethylene and
was located 4,900 feet below ground surface.

Testing
the 'Eductors'
In 1964, Chemistry Department Administrator Blair Munhofen uses Brookhaven
Lab's swimming pool to test the prototype eductors eventually used in
Davis's Homestake Mine neutrino detector. Submerged in the tank, the eductors served to mix helium with the perchloroethylene used in the
experiment.

A
Swim in the Mine
In 1971
Raymond Davis Jr. takes a dip in the water surrounding the
perchloroethylene tank deep within the Homestake Mine. At nearly a mile
beneath the ground, the scientists suffered through 90 degree heat for
upwards of 12 hours a day. The 300,000 gallons of water surrounding the
tank reduced background radiation which could interfere with counting.

Moon
Rocks
In
this 1969 photo, Raymond Davis (center) is flanked by co-researchers
Raymond (Dutch) Stoenner and Warren Lyman as they take a close-up look at
a large moon rock returned to Earth by Apollo 11. Davis, Stoenner, and
Lyman studied the moon rock for traces of radioactive gases, like
argon-37, that would help them determine how long the rock had been
exposed to cosmic rays.